Midea MV5-X252W/V2GN1 Service Manual page 34

Table 3-7.2: Indoor unit component control during oil return operation in cooling mode
Fan
Electronic expansion valve
Tables 3-7.3 and 3-7.4 show component control during oil return operation in heating mode.
Table 3-7.3: Outdoor unit component control during oil return operation in heating mode
Component
Inverter compressor A
Inverter compressor B
DC fan motor A
DC fan motor B
Electronic expansion valve A
Electronic expansion valve B
Four-way valve
Solenoid valve (liquid refrigerant injection)
Solenoid valve (oil balance)
Solenoid valve (fast defrosting)
Solenoid valve (EXV bypass)
Solenoid valve (indoor units bypass)
Table 3-7.4: Indoor unit component control during oil return operation in heating mode
Fan
Electronic expansion valve
201608
Component Unit state
Thermo on
Standby
Thermo off
Thermo on
Standby
Thermo off
Wiring diagram label
COMP(INV)
COMP(INV1)
FANA
FANB
EXVA
EXVB
ST1
SV2
SV4
SV5
SV6
SV7
Component Unit state
Thermo on
Standby
Thermo off
Thermo on
Standby
Thermo off
Control functions and states
Remote controller setting
Off
Remote controller setting
Normal control
300 (steps)
300 (steps)
8-12HP 14-22HP Control functions and states
● ●
Controlled according to load requirement
●
● ●
Controlled according to discharge pressure
●
● ●
Fully open
●
Off
● ●
Normal control
● ●
Normal control
● ●
Off
● ●
On
● ●
Normal control
● ●
Control functions and states
Off
Off
Off
480 (steps)
480 (steps)
480 (steps)
V5 X VRF 50/60Hz
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